blitz dual sbc spec S
12 May 2006, 09:51 PM
#2
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Honest opinion - it is boy racer pish for low powered cars. So is the HKS EVC. Yes you could probably run 1000 BHP with them, but on many setups you'll run into stuff you can't control. With an EWG you want RPM and gear compensation - AVC-R or get a good ECU that will do it.
Even on an Evo with a stock turbo I sold the HKS EVC5 with a posh stepper motor because I had to run so much midrange boost to get it to hold at the top. On the AVC-R I can setup the duty and boost targets every 500 RPM (with interpolation as well) where it matters, and get full boost in 2nd gear every time.
Even on an Evo with a stock turbo I sold the HKS EVC5 with a posh stepper motor because I had to run so much midrange boost to get it to hold at the top. On the AVC-R I can setup the duty and boost targets every 500 RPM (with interpolation as well) where it matters, and get full boost in 2nd gear every time.
12 May 2006, 10:02 PM
#3
Originally Posted by john banks
Honest opinion - it is boy racer pish for low powered cars. So is the HKS EVC. Yes you could probably run 1000 BHP with them, but on many setups you'll run into stuff you can't control. With an EWG you want RPM and gear compensation - AVC-R or get a good ECU that will do it.
Even on an Evo with a stock turbo I sold the HKS EVC5 with a posh stepper motor because I had to run so much midrange boost to get it to hold at the top. On the AVC-R I can setup the duty and boost targets every 500 RPM (with interpolation as well) where it matters, and get full boost in 2nd gear every time.
Even on an Evo with a stock turbo I sold the HKS EVC5 with a posh stepper motor because I had to run so much midrange boost to get it to hold at the top. On the AVC-R I can setup the duty and boost targets every 500 RPM (with interpolation as well) where it matters, and get full boost in 2nd gear every time.
so i have to sell my avcr off, he prefers the blitz and advises that model but im unsure ???
AVC-R or get a good ECU that will do it.
12 May 2006, 10:07 PM
#4
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The other answer is do whatever Mark Shead says! It will be correct.
You really want RPM control over the boost target and duty cycles though. You might end up with a nice installation that is dead easy to control, but a lot of big turbo installations benefit from ramping the duty up or down in various places to get the combination of best response and boost to suit your needs/fuel/engine/turbo. Takes quite a big turbo to hold boost to the red line on a larger capacity built engine, and then they can be a bit of a tiger to control in the midrange if you want to use pump fuel.
You really want RPM control over the boost target and duty cycles though. You might end up with a nice installation that is dead easy to control, but a lot of big turbo installations benefit from ramping the duty up or down in various places to get the combination of best response and boost to suit your needs/fuel/engine/turbo. Takes quite a big turbo to hold boost to the red line on a larger capacity built engine, and then they can be a bit of a tiger to control in the midrange if you want to use pump fuel.
12 May 2006, 10:18 PM
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Mark will keep you right 
Yes I'm think you can use the MAP sensor on the Autronics board.
Not sure on your engine size, but on the GT30R-12 0.82 AR on EJ257, if I connected the AVC-R to both sides of the EWG as shown in the AVC-R manual it was easy to control with fairly flat duty. It was too much for the engine in all fairness. If you are less than 2.33 and using it as a road car without race fuel and nitrous I would not go for the 0.82 AR exhaust housing, it was a bit big on the 2.5.
Yes I'm think you can use the MAP sensor on the Autronics board.Not sure on your engine size, but on the GT30R-12 0.82 AR on EJ257, if I connected the AVC-R to both sides of the EWG as shown in the AVC-R manual it was easy to control with fairly flat duty. It was too much for the engine in all fairness. If you are less than 2.33 and using it as a road car without race fuel and nitrous I would not go for the 0.82 AR exhaust housing, it was a bit big on the 2.5.
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12 May 2006, 10:34 PM
#9
Originally Posted by john banks
Mark will keep you right Yes I'm think you can use the MAP sensor on the Autronics board.
Not sure on your engine size, but on the GT30R-12 0.82 AR on EJ257, if I connected the AVC-R to both sides of the EWG as shown in the AVC-R manual it was easy to control with fairly flat duty. It was too much for the engine in all fairness. If you are less than 2.33 and using it as a road car without race fuel and nitrous I would not go for the 0.82 AR exhaust housing, it was a bit big on the 2.5.
Yes I'm think you can use the MAP sensor on the Autronics board.Not sure on your engine size, but on the GT30R-12 0.82 AR on EJ257, if I connected the AVC-R to both sides of the EWG as shown in the AVC-R manual it was easy to control with fairly flat duty. It was too much for the engine in all fairness. If you are less than 2.33 and using it as a road car without race fuel and nitrous I would not go for the 0.82 AR exhaust housing, it was a bit big on the 2.5.
its got ported and polished heads and raised compression and all rcm stuff so im hoping/expecting it to be ok
12 May 2006, 10:36 PM
#10
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Might be worth shopping for 0.63 AR exhaust housing and/or revving it as high as you dare 0.82 AR on 2.0 on a road car will feel like driving the ***** of a ***** ship on a very large elastic band
0.82 AR on 2.0 on a road car will feel like driving the ***** of a ***** ship on a very large elastic band
12 May 2006, 10:45 PM
#12
Originally Posted by john banks
Might be worth shopping for 0.63 AR exhaust housing and/or revving it as high as you dare 0.82 AR on 2.0 on a road car will feel like driving the ***** of a ***** ship on a very large elastic band
0.82 AR on 2.0 on a road car will feel like driving the ***** of a ***** ship on a very large elastic band
12 May 2006, 10:54 PM
#13
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http://forums.nasioc.com/forums/show....63+0.82+spool
This was the thread I was thinking of, have a read. Can't remember if this guy was on 2.0 or 2.5 at the time and the graphs have gone, but the data is also in the text of the thread.
This was the thread I was thinking of, have a read. Can't remember if this guy was on 2.0 or 2.5 at the time and the graphs have gone, but the data is also in the text of the thread.
12 May 2006, 11:11 PM
#14
just read it john and he has a 2.5ltr, it still doesnt really put me off as i have a hybrid twin scroll turbo which im expecting to make good lbs once tuned so if the 0.82 housing isnt to my liking ill just keep my hybrid those graphs do look really on the wire for performance vs 0.63 vs 0.82
those graphs do look really on the wire for performance vs 0.63 vs 0.82
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